lc74793 Sanyo Semiconductor Corporation, lc74793 Datasheet - Page 11

• Manufacturer Part Number: lc74793
• Description: Vps/pdc Slicer Ic
• Manufacturer: Sanyo Semiconductor Corporation

Command 3 (Synchronizing signal detection command 1)
• First byte
• Second byte
Note: All registers are cleared to 0 when the IC is reset by the RST pin.
DA 0 to 7
DA 0 to 7
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
Register
Register
RN2
RN1
RN0
SN3
SN2
SN1
SN0
—
—
—
—
—
—
—
—
—
Status
Status
1
1
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
First byte identification bit
Command 3 identification code.
Synchronizing signal detection settings 1.
Second byte identification bit
SN3
0
0
0
0
1
RN2
0
0
0
1
SN2
0
0
0
1
0
RN1
0
0
1
0
SN1
0
0
1
0
0
LC74793, 74793JM
Contents
Contents
SNO
0
1
0
0
0
RN0
0
1
0
0
Function
Function
Number of HSYNC detections
Number of HSYNC detections
No detection performed
128
256
16 (256)
32
64
8 (128)
0 (32)
4 (64)
External synchronizing signal detection
control.
Signal absent
Sets the sampling period during which SYNC
is continuously detected in the horizontal
synchronizing signal period (1H).
Values in parentheses apply when RNE0
(COM4) is set to 1.
External synchronizing signal
detection control.
Signal present
discrimination.
Sets the sampling period during which
SYNC cannot be detected
consecutively in the horizontal
synchronizing signal period (1H).
present discrimination.
Notes
Notes
absent
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